Despite the update last week that enabled multitouch on the Nexus One, the 3G issues persist, with the Nexus One switching from 3G to EDGE if you sneeze the wrong way (and/or hold it a certain way). Joking aside, the device switches from 3G to EDGE depending on how you hold the device. Check out the video, which provides additional details on the issue.
It absolutely blows my mind, and when I performed the same test as shown in the video, my device switched from 3G to EDGE connectivity. Mind you, I'm not in a trouble spot; I am in the San Francisco Bay Area, and have full 3G service. It's a bit unacceptable, and it's something that Google needs to work on if they're going to be a serious contender in the smartphone space. Sadly, I'm a bit afraid that this, combined with the reputation of their Nexus One customer service, is going to tarnish their phone reputation for some time to come.